A3

What did the team decide to change, and what is still open?

The traveler rev does not match Rev C.

Opened 11 September 2026. Northline Components, fictional.

Condition

On time is 82 percent. Wrong revision leads the long count. Mara Ellison is the person who reconciles what the systems will not.

Target

Traveler rev matches Rev C before a setup.

Why

ShopPacket lags Ledgerline, and the rev lived in email.

Countermeasure

Mara Ellison does not release a mismatch. Devon Cho stops the setup. The rule started 21 September 2026.

Result

1174

Expedites in a typical week before the rule, then the next week, then the latest. Scratches now lead the short count.

Still open

The confirm still lags 16 hours. The posted cycle is 46 minutes against a takt of 25.

A filled sheet, opened 11 September 2026. The rev-match rule started 21 September 2026. Confirm lag and the posted cycle are still open.

How this sheet sits with the others

Northline was at 82 percent on time. Wrong revision led the long Pareto. Mara was the person reconciling systems that do not reconcile themselves. The target is a traveler revision that matches Rev C before a setup. ShopPacket lags Ledgerline, and the rev lived in email. From 21 September, Mara does not release a mismatch and Devon stops the setup. Expedites in a typical week before the rule were 11. The two weeks after were 7, then 4. The recent Pareto flips to scratches. Confirm lag and a posted cycle over takt are still open. This sheet is not a control chart of the fix.

What it makes visible: The condition, the target, the why, the countermeasure, the result so far, and what is still open.
When it is useful: When a countermeasure is in trial and the team still needs one sheet for the decision.
Who uses it: Mara Ellison owns the release rule. Devon Cho stops the setup. The sheet was opened 11 September 2026.
What it takes: On-time ship, the long Pareto, and the fact that Mara is the integration layer between Ledgerline and ShopPacket.
What it leaves: A rule, started 21 September: Mara does not release a mismatch, and Devon stops the setup. A typical week had 11 expedites. The two weeks after were 7, then 4. Still open: confirm lag, and a posted cycle over takt.
The underlying record: On-time ship, the revision that led the long count, Mara Ellison's refusal to release a mismatch, Devon Cho's stop, and the confirm lag and cycle still open are the decision the Pareto, the FMEA, and the Friday sheet share.

Where these facts go next

What this sheet still leaves out

It is not a control chart of the fix.